#include "stm32f4_sdio_sd_LowLevel.h"
#include "stm32f4_sdio_sd.h"

void SD_NVIC_Configuration(void)
{
  NVIC_InitTypeDef NVIC_InitStructure;

  NVIC_InitStructure.NVIC_IRQChannel = SDIO_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
}

/**
  * @brief  DeInitializes the SDIO interface.
  * @param  None
  * @retval None
  */
void SD_LowLevel_DeInit(void)
{
    GPIO_InitTypeDef  GPIO_InitStructure;

    /*!< Disable SDIO Clock */
    SDIO_ClockCmd(DISABLE);

    /*!< Set Power State to OFF */
    SDIO_SetPowerState(SDIO_PowerState_OFF);

    /*!< DeInitializes the SDIO peripheral */
    SDIO_DeInit();

    /* Disable the SDIO APB2 Clock */
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_SDIO, DISABLE);
    
    GPIO_PinAFConfig(GPIOC, GPIO_PinSource8, GPIO_AF_MCO);
    GPIO_PinAFConfig(GPIOC, GPIO_PinSource9, GPIO_AF_MCO);
    GPIO_PinAFConfig(GPIOC, GPIO_PinSource10, GPIO_AF_MCO);
    GPIO_PinAFConfig(GPIOC, GPIO_PinSource11, GPIO_AF_MCO);
    GPIO_PinAFConfig(GPIOC, GPIO_PinSource12, GPIO_AF_MCO);
    GPIO_PinAFConfig(GPIOD, GPIO_PinSource2, GPIO_AF_MCO);

    /* Configure PC.08, PC.09, PC.10, PC.11 pins: D0, D1, D2, D3 pins */
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
    GPIO_Init(GPIOC, &GPIO_InitStructure);

    /* Configure PD.02 CMD line */
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
    GPIO_Init(GPIOD, &GPIO_InitStructure);

    /* Configure PC.12 pin: CLK pin */
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
    GPIO_Init(GPIOC, &GPIO_InitStructure);
}

/**
  * @brief  Initializes the SD Card and put it into StandBy State (Ready for
  *         data transfer).
  * @param  None
  * @retval None
  */
void SD_LowLevel_Init(void)
{
    GPIO_InitTypeDef  GPIO_InitStructure;

    /* GPIOC and GPIOD Periph clock enable */
    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC | RCC_AHB1Periph_GPIOD, ENABLE);

    #ifdef SD_DMA_MODE
    SD_NVIC_Configuration();
    #endif
    
    GPIO_PinAFConfig(GPIOC, GPIO_PinSource8, GPIO_AF_SDIO);
    GPIO_PinAFConfig(GPIOC, GPIO_PinSource9, GPIO_AF_SDIO);
    GPIO_PinAFConfig(GPIOC, GPIO_PinSource10, GPIO_AF_SDIO);
    GPIO_PinAFConfig(GPIOC, GPIO_PinSource11, GPIO_AF_SDIO);
    GPIO_PinAFConfig(GPIOC, GPIO_PinSource12, GPIO_AF_SDIO);
    GPIO_PinAFConfig(GPIOD, GPIO_PinSource2, GPIO_AF_SDIO);

    /* Configure PC.08, PC.09, PC.10, PC.11 pins: D0, D1, D2, D3 pins */
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_25MHz;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
    GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
    GPIO_Init(GPIOC, &GPIO_InitStructure);

    /* Configure PD.02 CMD line */
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
    GPIO_Init(GPIOD, &GPIO_InitStructure);

    /* Configure PC.12 pin: CLK pin */
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
    GPIO_Init(GPIOC, &GPIO_InitStructure);

    /* Enable the SDIO APB2 Clock */
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_SDIO, ENABLE);

    /* Enable the DMA2 Clock */
    RCC_AHB1PeriphClockCmd(SD_SDIO_DMA_CLK, ENABLE);
}

/**
  * @brief  Configures the DMA2 Channel4 for SDIO Tx request.
  * @param  BufferSRC: pointer to the source buffer
  * @param  BufferSize: buffer size
  * @retval None
  */
void SD_LowLevel_DMA_TxConfig(uint32_t *BufferSRC, uint32_t BufferSize)
{
    DMA_InitTypeDef SDDMA_InitStructure;

    DMA_ClearFlag(SD_SDIO_DMA_STREAM, SD_SDIO_DMA_FLAG_FEIF | SD_SDIO_DMA_FLAG_DMEIF | SD_SDIO_DMA_FLAG_TEIF | SD_SDIO_DMA_FLAG_HTIF | SD_SDIO_DMA_FLAG_TCIF);

    /* DMA2 Stream3  or Stream6 disable */
    DMA_Cmd(SD_SDIO_DMA_STREAM, DISABLE);

    /* DMA2 Stream3  or Stream6 Config */
    DMA_DeInit(SD_SDIO_DMA_STREAM);

    SDDMA_InitStructure.DMA_Channel = SD_SDIO_DMA_CHANNEL;
    SDDMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)SDIO_FIFO_ADDRESS;
    SDDMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)BufferSRC;
    SDDMA_InitStructure.DMA_DIR = DMA_DIR_MemoryToPeripheral;
    SDDMA_InitStructure.DMA_BufferSize = 0;
    SDDMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
    SDDMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
    SDDMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;
    SDDMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;
    SDDMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
    SDDMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;
    SDDMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Enable;
    SDDMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full;
    SDDMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_INC4;
    SDDMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_INC4;
    DMA_Init(SD_SDIO_DMA_STREAM, &SDDMA_InitStructure);
    DMA_ITConfig(SD_SDIO_DMA_STREAM, DMA_IT_TC, ENABLE);
    DMA_FlowControllerConfig(SD_SDIO_DMA_STREAM, DMA_FlowCtrl_Peripheral);

    /* DMA2 Stream3  or Stream6 enable */
    DMA_Cmd(SD_SDIO_DMA_STREAM, ENABLE);
}

/**
  * @brief  Configures the DMA2 Channel4 for SDIO Rx request.
  * @param  BufferDST: pointer to the destination buffer
  * @param  BufferSize: buffer size
  * @retval None
  */
void SD_LowLevel_DMA_RxConfig(uint32_t *BufferDST, uint32_t BufferSize)
{
    DMA_InitTypeDef SDDMA_InitStructure;

    DMA_ClearFlag(SD_SDIO_DMA_STREAM, SD_SDIO_DMA_FLAG_FEIF | SD_SDIO_DMA_FLAG_DMEIF | SD_SDIO_DMA_FLAG_TEIF | SD_SDIO_DMA_FLAG_HTIF | SD_SDIO_DMA_FLAG_TCIF);

    /* DMA2 Stream3  or Stream6 disable */
    DMA_Cmd(SD_SDIO_DMA_STREAM, DISABLE);

    /* DMA2 Stream3 or Stream6 Config */
    DMA_DeInit(SD_SDIO_DMA_STREAM);

    SDDMA_InitStructure.DMA_Channel = SD_SDIO_DMA_CHANNEL;
    SDDMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)SDIO_FIFO_ADDRESS;
    SDDMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)BufferDST;
    SDDMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
    SDDMA_InitStructure.DMA_BufferSize = 0;
    SDDMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
    SDDMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
    SDDMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;
    SDDMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;
    SDDMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
    SDDMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;
    SDDMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Enable;
    SDDMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full;
    SDDMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_INC4;
    SDDMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_INC4;
    DMA_Init(SD_SDIO_DMA_STREAM, &SDDMA_InitStructure);
    DMA_ITConfig(SD_SDIO_DMA_STREAM, DMA_IT_TC, ENABLE);
    DMA_FlowControllerConfig(SD_SDIO_DMA_STREAM, DMA_FlowCtrl_Peripheral);

    /* DMA2 Stream3 or Stream6 enable */
    DMA_Cmd(SD_SDIO_DMA_STREAM, ENABLE);
}



